I'm much afriad ___ my pet dog when I'm away for a long time

I'm much afriad ___ my pet dog when I'm away for a long time -Could you please feed my pet dog for me while I'm away?-___ i'm expecting a pet dog for long but mum has no time to buy 介词填空 would you please look（ ） my pet dog when I'm away I'm ging away for a long time. Please look after my pet dog ______ I'm away.A、while B、so C、 1 i want to for myself when i 'm older 2 my friends a pet pi I'm going away for a long time.为什么这里going后面不用加to呢? I'm sorry I ___(keep) you waiting for such a long time Jenny says that she ______(take) care of my pet dog when I'm .I'm sorry to keep you ___ for a long time.A.to wait B.waiti I haven'tseen my grandma for a long time.I'm looking forward